It's very important when doing sit-ups that you do not put your hands behind your head, as you will be inclined to pull your head forward.
This could cause damage to your neck spine.
Your head, neck and abs should be in one straight line. :) #gym #workou
[Today’s guests]
Welcome to #trainhostelhokutosei from all over the world! We enjoy talking with them and taking photos:) The guy who is from #Sweden have traveled more than 20 countries and show us many beautiful pictures! Tokyo is getting warm nowadays!
